Home / 379,286.68-523,438.06-218,187.40

Finding the Fourth Proportional to 379,286.68, 523,438.06 and 218,187.40

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Solution

The fourth proportional to 379,286.68, 523,438.06 and 218,187.40 is: 301,111.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,286.68 : 523,438.06 = 218,187.40 : x
  2. Step 2: Convert to fraction form
    379,286.68/523,438.06 = 218,187.40/x
  3. Step 3: Cross multiply
    379,286.68x = 523,438.06 × 218,187.40
  4. Step 4: Simplify right side
    379,286.68x = 114,207,589,372.44
  5. Step 5: Solve for x
    x = 114,207,589,372.44/379,286.68
  6. Step 6: Final answer
    x = 301,111.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.